The Inquisition (or The Holy Orders of the Emperor's Inquisition) is an organisation that acts as the secret police of the Imperium, hunting down any and all threats to the stability of the God-Emperor's realm. No one expects them.

Heart of Pargon is a Fantasy game based around a unique mythos written by its founding members. There's an emphasis on character advancement and growth, and combat is based partly on melee fighting and partly on numbers, with different blows doing different damage.

Or:

Alone is a Science Fiction game based very loosely on the film Aliens. The emphasis is on immersion and minimal ref involvement, and the combat system is mostly gunfights, using a trust-based system that lets people decide how hurt they are.

On the group, a bit more detail, like who they are, what they want, how do they fit into the world in general.

If it is based on inquisitors from the 40k universe, then colour me interested.